MoP, thanks again for this script, it's really great. It worked flawlessly, even all the way up on UV channel 99, where we store unique-per-vert UVs. Much appreciated!
I didn't use it with multi-unwrap, I just had a uvw unwrap that was set to uv#99 and used it there. PeterK: It proportionally scales the UV elements, so the UV proportions match the 3d space proportions. Here's an example of the same idea... If you put a checker map on the model and your checkers are all different sizes,…